Welding tool



J. U. GARIBAY WELDING TOOL March 4, 1947.

Filed Oct. 25, 1943 INVENTOR. 7055 U: 6/1/0517- y, I v fl AMZ Patented Mar. 4, 1947 UNITED STATES PATENT OFFICE WELDING TOOL Joseph U. Garibay, Montebeilo, Calif.

Application October 25, 1943, Serial No. 507,572

1 Claim.

This invention comprehend the provision of an improved type of welding tool or apparatus which may embody a conventional form of electrode holder reconstructed so as to include char acteristics of my invention, or to which conventional tool my improvements may be added in the form of an attachment.

Conventional welding tools as new used extensively in industry include a pair of scissor-like members hinged. together at a point intermediate the handles and jaws and tensioned so that the jaws are urged to closed positions for gripping and hol-din a section of welding rod which forms an electrode applicable to sheets of material or parts adapted to be welded together. The jaws are frequently disposed in parallelism outwardly of the hinge and are grooved longitudinally and transversely for providing seats for the Welding rods or electrodes. Usually the electrode is disposed longitudinally of the jaws and when so held requires tilting of the holding tool to correspond to the effective angle of the electrode which results discomfort to the welder and occasions inaccuracy and inefficien cy.

It is a primary object of my invention, therefore, to provide a welding tool possessing all of the conventional characteristics but additionally providing a more convenient and efiicient form of the jaws and disposition of the welding rod for effecting welding operations of variable character.

Other objects will appear as the description of my impro ements progresses.

I have shown a preferred form of my improve ment in the accompanying drawing, together with certain modifications thereof, which while serving to illustrate the invention are not illustrative of other forms of. the device contemplated hereby but are obviously subject to further modification, within the scope of the appended claims, without departing from the spirit of the invention.

In said drawing:

Fig. l is a side view of a conventional welding tool with my improved electrode holder applied thereto as an attachment;

Fig. 2 is a fragmentary longitudinal section of the tool body and jaws formed in accordance with my design and shown integral with the tool;

Fig. 3 is a section similar to Fig. 2 except that my improvements are shown as an attachment applied to the conventional jaws of the tool;

Figs. 4 and 5 are perspective views, respectively, of the upper and lower jaws detached from 2 the conventional tool and which together form the attachment shown in Fig. 3;

Figs. 6 and 7 are, respectively, transverse sections of the device on lines E5 and l-'l of Figs. 2 and 3.

Briefly described and referring particularl to Fig. 1, a conventional welding tool to which my improvements are adaptable includes: a pair of members A and B which are hinged together at l and are provided with handles 2 and 3, respectively, extended in a common direction from the hinge i. Handle 2 has an electric socket '3 to which is applied a conductor 5, said socket and said conductor being covered by a telescoping member 5 of insulating material. Handle 3 has a protecting shield l of insulating material and of channeled cross section suitably attached thereto which extends as closely as possible to the hinge l. Handl s A and B are tensioned by means of a compression spring 53 confined in telescoping tubular members 55 and iii each having a closed end (see Fig. l), which members and end elements are also of insulating material, said spring serving to hold the handles spread apart while holding the usual jaws ii and E2 in substantially parallel horizontal planes.

Jaws H and i2 are covered with channeled shields i3 and M, respectively. and an intermediate shield iil is attached to the lower side of I member A. Thus, the metallic parts of the tool are completely or sufiiciently covered by the insulating shields as to prevent accidental contact of the hands of an operator therewith.

The simplest form of my invention is shown in Figs. 2 and 6 in which the usually horizontal jaws II and 12 are formed with downwardly inclined extensions ii and !2, respectively, having insulated shields I 6 and ll, the upper ends of which abut the outer ends of shields I3 and I4 and the lower ends of which are formed so as to at least partially overlie the ends of the jaw extensions II and !2.

It will be noted that the jaws H and i2 have transverse grooves l8, It, etc, of the same or variable size and depth and longitudinal grooves l9, for selectively gripping and holding a welding electrode C during welding operations. When my improvements are applied to the tool, as

shown in Fig. 2, said transverse and longitudinal grooves may be provided in the angularly disposed extension, or either of them, while the grooves in the horizontal portions are omitted.

As shown in Figs. 3, 4, 5, and 7, my improvements may be applied as an attachment to a conventional tool of the character shown in Fig. 1 by the provision of separable members D and E which are adapted to be applied, respectively, to the lower side of jaw ii and to the upper side of the jaw 12 in the manner hereinafter described. Member D has a jaw disposed at a suitable angle relative to a fiat portion 2| and providing a shoulder 22 for engagement with the outer end of jaw ii. The upper face 23 of jaw 20 carries the same transverse and longitudinal grooves It and 59 as are conventional on the jaws H and H2, or otherwise. Jaw 22 carries a shield l6 while the attaching portion 2! thereof carries a Shield :3. Said shields are secured in position with the portions 2i) and 2! as by means of screws 26 and 2 5', which are screwed in to the jaw Zii and the jaw l 1, respectively, and have their heads depressed in counterbores in shields i6 and It so as to prevent contact of the screw heads with the hands of an operator.

Similarly, member E is applied to jaw 12 and has an inclined jaw 25, a flat attaching portion 26 and a shoulder 2'! which is adapted to abut the outer end of jaw l2. Member E carries a shield ll over the jaw and a shield M over the portion 2% thereof. Screws 2t serve to hold shield H on jaw 25, and similar screws 28' hold the shield i l and the member E on jaw i 9.

Certain of the advantages of my invention will appear from the reading of the foregoing description. Other advantages arise from the provision of electric non-conducting means which insulate the metal spring 8 from possible contact by the operator at point. Such means, as is well known, are also non-conductors of heat to a large degree, and thus serve to help prevent the spring 8 from becoming very hot from conduction or radiation of heat from the metal parts A and B, which would tend to weaken it and shorten its working life because it is often being cooled quickly. If heated to a considerable degree and then cooled quickly the metal of the spring will tend to crystallize in a well known manner. The non-conducting casing for the spring at all points not only reduces the degree of heating of the spring, but also slows down its rate of cooling, even in cold weather when the hot tool is laid aside quickly, as at quitting time.

What I claim is:

Jaw extension means for a welding tool which comprises a pair of pivoted elements each formed with a body portion and handle portion extending in one direction from the pivot of said elements, and a jaw extending in the opposite direction from said body, said jaws being disposed in said extension means in parallelism one above the other, including two electrode gripping members, one of said members having a rear exten sion for engaging against the bottom face of the lower jaw and a shoulder for engaging against the outer end of said lower jaw, the other of said members having a rear extension for engaging against the upper face of the upper jaw and a shoulder for engaging against the outer end of said upper jaw, each of said members having a downwardly inclined electrode gripping portion, the lower one of said portions being provided with a plurality of transverse notches of varying sizes in its work face, whereby a plurality of round rod electrodes of varying sizes may be selectively and securely gripped, one at a time, between said inclined portions, insulating shield means for encompassing approximately all of both of said inclined portions except their work faces and narrow areas of their sides adjacent their work faces, and means for fastening each of said inclined portions and its associated shield as a unit to the associated jaw of said tool.

JOSEPH U. GARIBAY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,003,196 Jackson May 28, 1935 2,162,112 Nickels June 13, 1939 2,284,648 Foreman June 2, 1942 2,327,290 Rice Aug. 17, 1943 2,056,045 Fauseh et al. Sept. 19, 1936 2,213,306 De Bene Sept. 3, 1940 2,350,614 Jackson June 6, 1944:

FOREIGN PATENTS Number Country Date 404,691 German Oct. 26, 1924 208,218 Swiss Apr. 1, 1940 

